The S-Layer Glycome—Adding to the Sugar Coat of Bacteria

Figure 1

(a) Electron micrograph of the oblique S-layer glycoprotein lattice as observed on the cell surface of G. stearothermophilus NRS 2004/3a upon freeze-etching and platinum-carbon shadowing. Bar, 100 nm. (b) Inset, schematic representation of the cell wall illustrating the S-layer glycoproteins, with the S-layer glycan chains protruding into the exterior environment. Colour code: yellow S-layer protein; blue S-layer glycan chains; grey cytoplasmic membrane; black peptidoglycan.